Calculation of fungal and bacterial inorganic nitrogen immobilization rates in soil. (February 2021)

• Record Type: Journal Article
• Authors: Li, Xiaobo; He, Hongbo; Zhang, Xudong; Kazanci, Caner; Li, Zhian; Necpalova, Magdalena; Ma, Qianqian
• Is Part Of: Soil biology and biochemistry. Volume 153(2021)
• Publication Date: 2021-02
• Subjects: Inorganic N immobilization -- Stable isotope probing -- Amino sugars -- Fungi -- Bacteria -- 15N; Soil biochemistry -- Periodicals; Soil biology -- Periodicals; Sols -- Biochimie -- Périodiques; Sols -- Biologie -- Périodiques; Sols -- Microbiologie -- Périodiques; Bodembiologie; Biochemie; 631.46
• DOI: 10.1016/j.soilbio.2020.108114
• Languages: English
• ISSNs: 0038-0717

Abstract

Abstract: Microbial inorganic nitrogen (N) immobilization is an important mechanism in the retention of N in soils. However, as a result of the high diversity and complexity of soil microorganisms, there is still no effective approach to measuring the respective immobilization rates of inorganic N by fungi and bacteria, which are the two dominant microbial communities in soils. We propose a mathematical framework, combining the experimentally measurable gross inorganic N immobilization rate and proxies for fungal and bacterial inorganic N immobilization rates, to quantify the respective immobilization rates of inorganic N by fungal and bacterial communities in soil. Our approach will help to unravel the mechanisms of microbial N retention in soils. Highlights: ● Quantifying fungal and bacterial inorganic N immobilization rates by a new method ● The mathematical method relies on two sets of experimentally measurable parameters ● A case example was presented illustrating the method